A polyvinyl chloride adhesive tape includes a substrate, a primer layer, and an adhesive layer. The substrate contains a polyvinyl chloride and a plasticizer. The primer layer is disposed under the substrate. The adhesive layer is disposed under the primer layer and contains a resin component having 20% by mass or more of acrylic polymer. The plasticizer contained in the substrate is at least one plasticizer selected from the group consisting of trimellitic acid-based plasticizers, aliphatic dibasic acid-based plasticizers, epoxy-based plasticizers, phthalic acid-based plasticizers, pyromellitic acid ester-based plasticizers, phosphate ester-based plasticizers, and ether ester-based plasticizers.

A polyvinyl chloride adhesive tape includes a substrate, a primer layer, and an adhesive layer. The substrate contains a polyvinyl chloride and a plasticizer. The primer layer is disposed under the substrate. The adhesive layer is disposed under the primer layer and contains a resin component having 20% by mass or more of acrylic polymer. The plasticizer contained in the substrate is at least one plasticizer selected from the group consisting of trimellitic acid-based plasticizers, aliphatic dibasic acid-based plasticizers, epoxy-based plasticizers, phthalic acid-based plasticizers, pyromellitic acid ester-based plasticizers, phosphate ester-based plasticizers, and ether ester-based plasticizers.

Provided is a masking sheet for chemical solution treatment, the masking sheet comprising a substrate having first and second faces, and a PSA layer placed on the first face side of the substrate. The masking sheet is constituted so that penetration of a chemical solution is visually detectable when inspected from the outer face of the masking sheet.

A method for increasing the adhesion between the first surface of a first web-type material and a first surface of a second web-type material, the first web-type material and the second web-type material being supplied to a lamination nip continuously and with the same direction of the web. In said nip, the first surface of the first web-type material and of the second web-type material are laminated together and both first surfaces are treated with a plasma over the whole surface. The lamination nip is formed by a pressure roller and a counter-pressure roller and at least one of the surfaces of the rollers or both are equipped with a dielectric. The first web-type material comprises an adhesive compound layer arranged in the first web-type material such as to form the first surface of the first web-type material.

A method for increasing the adhesion between the first surface of a first web-type material and a first surface of a second web-type material, the first web-type material and the second web-type material being supplied to a lamination nip continuously and with the same direction of the web. In said nip, the first surface of the first web-type material and of the second web-type material are laminated together and both first surfaces are treated with a plasma over the whole surface. The lamination nip is formed by a pressure roller and a counter-pressure roller and at least one of the surfaces of the rollers or both are equipped with a dielectric. The plasma or the corona is produced by a nozzle. The first web-type material comprises an adhesive compound layer arranged in the first web-type material such as to form the first surface of the first web-type material.

Various carton sealing tapes are disclosed that have a plurality of security features, at least two of which include nanomarker particles having identification indicia visible under about 100 to about 400 times magnification and taggants visible upon exposure to a pre-selected wavelength outside the visible spectrum included in the same or different layers of the tape structure depending upon the selection of the backing material for the substrate of the tape. The carton sealing tapes are also printable for inclusion of a consecutive sequence of coded identification information in the form of a barcode or a 2D code.

Herein are disclosed a pressure-sensitive adhesive layer on a substrate, the adhesive layer containing stripes of first and second pressure-sensitive adhesives. The surface of the adhesive layer that faces the substrate is surface-enriched with the first pressure-sensitive adhesive. Methods of making are disclosed.

A double-sided adhesive tape having a heat-activatable adhesive layer protected with an interliner, in order to allow such tapes to be guided stably over cutting and winding units and also to be stably stored and transported, has a composite system comprising: an adhesive tape (A) comprising: a pressure sensitive adhesive layer, and a heat-activatable adhesive layer; a release liner situated on the pressure sensitive adhesive layer of the tape (A); and an adhesive tape (B) comprising: a carrier layer, a release layer on one side of the carrier layer, and a pressure sensitive adhesive layer on the side of the carrier layer opposite the release layer and in direct contact with the heat-activatable adhesive layer of tape (A).

Also disclosed is a method for producing a composite system of this kind, and the specific use of the tape (B).

Adhesive tape, in particular wrapping tape for sheathing cables in automobiles, having a textile support and at least one adhesive layer applied to one side or both sides of the support, wherein the support is colored by an in particular yellow dye, characterized in that entirely or partially inorganic mineral pigments are used as the dye. In a preferred embodiment, as pigments of the mineral class of phosphates, arsenates or vanadates, clinobisvanites are used.

An adhesive sheet in which the adhesive strength of an adhesive layer to other adherends is low, adhesive layers can be firmly bonded to each other, the adhesive layers will not be destroyed even if the adhesive layers are peeled after having once been bonded, and sufficient bonding strength is obtained even if the adhesive layers are re-bonded. An adhesive sheet in which an intermediate layer containing methyl methacrylate-grafted natural rubber is provided on a substrate containing a vinyl chloride resin and a plasticizer, and an adhesive layer including an adhesive containing the plasticizer and a rubber component containing natural rubber and methyl methacrylate-grafted natural rubber is provided on the intermediate layer, wherein a degree of swelling of the rubber component with respect to the plasticizer is by a factor of 1.5 to 4.5.